DE60039033D1 - Storage system for confirming data synchronization during asynchronous remote copying - Google Patents

Storage system for confirming data synchronization during asynchronous remote copying

Info

Publication number
DE60039033D1
DE60039033D1 DE60039033T DE60039033T DE60039033D1 DE 60039033 D1 DE60039033 D1 DE 60039033D1 DE 60039033 T DE60039033 T DE 60039033T DE 60039033 T DE60039033 T DE 60039033T DE 60039033 D1 DE60039033 D1 DE 60039033D1
Authority
DE
Germany
Prior art keywords
host device
storage system
data synchronization
asynchronous remote
remote copying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60039033T
Other languages
German (de)
Inventor
Kiichiro Urabe
Ikuo Uratani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE60039033D1 publication Critical patent/DE60039033D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2071—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring using a plurality of controllers
    • G06F11/2074—Asynchronous techniques
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users
    • Y10S707/99953—Recoverability
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S707/00—Data processing: database and file management or data structures
    • Y10S707/99951—File or database maintenance
    • Y10S707/99952—Coherency, e.g. same view to multiple users
    • Y10S707/99955—Archiving or backup

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

A synchronization confirmation method required for operation of a database is provided to a host device (1a) connected to a disk device which provides remote asynchronous data transfer. Immediately after commit of write data, an application (2a) of the host device (1a) issues a sync command which requires synchronization confirmation. A disk control device (130a) notifies the host device (1a) of a number (204) concerning latest data received from the host device of a local side and a number (206) concerning latest data received by a remote side. When the two numbers have coincided with each other, the host device judges the commit operation to have been completed.
DE60039033T 2000-05-25 2000-09-15 Storage system for confirming data synchronization during asynchronous remote copying Expired - Lifetime DE60039033D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000159547 2000-05-25

Publications (1)

Publication Number Publication Date
DE60039033D1 true DE60039033D1 (en) 2008-07-10

Family

ID=18663850

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60039033T Expired - Lifetime DE60039033D1 (en) 2000-05-25 2000-09-15 Storage system for confirming data synchronization during asynchronous remote copying

Country Status (3)

Country Link
US (4) US6591351B1 (en)
EP (1) EP1158409B1 (en)
DE (1) DE60039033D1 (en)

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Also Published As

Publication number Publication date
US6591351B1 (en) 2003-07-08
US6904503B2 (en) 2005-06-07
US7203807B2 (en) 2007-04-10
US20030200387A1 (en) 2003-10-23
EP1158409A3 (en) 2006-10-11
EP1158409A2 (en) 2001-11-28
US6760824B2 (en) 2004-07-06
US20050188254A1 (en) 2005-08-25
US20040250023A1 (en) 2004-12-09
EP1158409B1 (en) 2008-05-28

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